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v3.25.1

Revenues - Schedule of Disaggregated by Revenue (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Disaggregation Of Revenue [Line Items] |  |
Investment Income, Nonoperating | $ 18 | $ 18
Other income, net | 1 | 3
Total revenues | 1,404 | 1,258
Base Commission Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 958 | 864
Fee Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 265 | 227
Other Supplemental Commissions Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 100 | 90
Profit-Sharing Contingent Commission Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 43 | 46
Earned premium |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 19 | 10
Operating Segments |  |
Disaggregation Of Revenue [Line Items] |  |
Total revenues | 1,394 | 1,246
Operating Segments | Retail |  |
Disaggregation Of Revenue [Line Items] |  |
Investment Income, Nonoperating | 2 | 1
Other income, net | 0 | 2
Total revenues | 907 | 806
Operating Segments | Retail | Base Commission Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 617 | 547
Operating Segments | Retail | Fee Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 177 | 156
Operating Segments | Retail | Other Supplemental Commissions Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 97 | 86
Operating Segments | Retail | Profit-Sharing Contingent Commission Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 14 | 14
Operating Segments | Retail | Earned premium |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 0 | 0
Operating Segments | Programs |  |
Disaggregation Of Revenue [Line Items] |  |
Investment Income, Nonoperating | 4 | 5
Other income, net | 1 | 1
Total revenues | 328 | 298
Operating Segments | Programs | Base Commission Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 218 | 206
Operating Segments | Programs | Fee Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 65 | 49
Operating Segments | Programs | Other Supplemental Commissions Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 1 | 1
Operating Segments | Programs | Profit-Sharing Contingent Commission Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 20 | 26
Operating Segments | Programs | Earned premium |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 19 | 10
Operating Segments | Wholesale Brokerage |  |
Disaggregation Of Revenue [Line Items] |  |
Investment Income, Nonoperating | 1 | 1
Other income, net | 0 | 0
Total revenues | 159 | 142
Operating Segments | Wholesale Brokerage | Base Commission Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 123 | 111
Operating Segments | Wholesale Brokerage | Fee Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 24 | 21
Operating Segments | Wholesale Brokerage | Other Supplemental Commissions Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 2 | 3
Operating Segments | Wholesale Brokerage | Profit-Sharing Contingent Commission Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 9 | 6
Operating Segments | Wholesale Brokerage | Earned premium |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 0 | 0
Other |  |
Disaggregation Of Revenue [Line Items] |  |
Investment Income, Nonoperating | 11 | 11
Other income, net | 0 | 0
Total revenues | 10 | 12
Other | Base Commission Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 0 | 0
Other | Fee Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | (1) | 1
Other | Other Supplemental Commissions Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 0 | 0
Other | Profit-Sharing Contingent Commission Revenue |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | 0 | 0
Other | Earned premium |  |
Disaggregation Of Revenue [Line Items] |  |
Fees and Commissions, Other | $ 0 | $ 0

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